Early European settlers begin moving into the valleys of western Morris County, following Native American trails along the South Branch of the Raritan River.

German-speaking immigrants traveling through Philadelphia begin settling the fertile valley that will become known as Dutch Valley or German Valley.

The Logan Tract, containing about 1,813 acres of land in the valley, is established and later subdivided among several pioneer families.

Several founding settlers acquire farms in the valley, including Johannes Peter Scharpenstein, Philip Weise, Tunis Trimmer, William Welsch, Leonard Nachbar, and Matthias Trimmer.

John Peter Neitzer establishes the first store and tavern in the village, creating an early commercial center.

A grist mill and saw mill are constructed along the South Branch of the Raritan River, providing essential services for local farmers.

Tunis Trimmer builds one of the earliest stone houses in the township, still standing today.

Records refer to the settlement as Dutch Valley, a name likely derived from the German word Deutsch.

The Old Union Church (Old Stone Church) is built by Lutheran and Dutch Reformed congregations, replacing an earlier log church.

During the American Revolution, New Jersey becomes known as the “Crossroads of the Revolution.” Residents of the valley witness troop movements and wartime activity throughout the region.

Washington Township is officially established, becoming the first township in New Jersey named in honor of George Washington.

Agriculture, milling, tanning, blacksmithing, and trade support the growing rural community.

The first stone bridge is constructed over the South Branch of the Raritan River, replacing the earlier ford used by wagons and travelers.

A Presbyterian Church is built near the Trimmer property as the community continues to grow.

German Valley develops into a small regional center with stores, mills, taverns, and churches serving surrounding farms.

Railroads and improved roads connect rural communities with larger markets, gradually transforming local commerce.

The village name German Valley is officially changed to Long Valley during World War I.